As a core power equipment, the dry-type transformer uses air or inert gas as the cooling medium, without insulating oil. It has significant advantages such as safety, environmental protection, and convenient maintenance, and undertakes the key functions of voltage transformation, power transmission and distribution in the power system. Its core function is to convert the input high voltage into low voltage that meets the equipment requirements through the principle of electromagnetic induction, or vice versa to realize voltage boosting, ensuring the efficiency and stability of power transmission. At the same time, it can effectively isolate the power grid from the load, suppress voltage fluctuations and harmonic interference, and protect the safe operation of the back-end precision equipment. Compared with oil-immersed transformers, its insulation structure is resistant to high temperature and has excellent fire performance, without risks such as oil leakage and combustion in case of failure, which is suitable for various harsh environments.

In terms of application scenarios, dry-type transformers have become the first choice in the construction field due to their safety characteristics. In the power distribution systems of high-rise buildings and commercial complexes, they can be directly installed in the floor power distribution rooms to avoid fire hazards of oil-immersed equipment. In places with high requirements for power supply reliability such as hospital operating rooms and data centers, their stable operation can ensure uninterrupted power supply for key equipment. In the industrial field, under high-temperature and dusty environments such as metallurgy and chemical industry, dry-type transformers with high protection levels can work stably for a long time and provide suitable voltage for production equipment. The new energy field also cannot do without its support. In the boosting and power distribution links required by photovoltaic power plants and wind power sites, dry-type transformers can adapt to the volatility of new energy power and improve energy conversion efficiency. In addition, in the traction power supply systems of rail transit such as subways and light rails, and in special scenarios such as mines and tunnels, their advantages of explosion-proof and resistance to harsh environments are also fully exerted.